ISO is a building block for BT_AUDIO but it is not only
useful for AUDIO, and as such should be possible to
enable without enabling BT_AUDIO.
This commit moves iso.c and iso_internal.h to the
host directory (from host/audio) and removes
the CMakeLists.txt.
The /audio directory is left intact for the Kconfig options
it provides, and as a directory for future BLE Audio
content.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
Refactor out implementation of functions defined in buf.h to its own
source file buf.c
Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
